Fix some typos in 4.20 features

content/documentation/input_deck/Input_deck_control.md

@@ -308,7 +308,7 @@ calculated and is subtracted from all subsequent current depositions.
     print a warning message and continue running. Setting this flag to "T"
     will force the code to abort. The default value is "F".
 
-** The following options require EPOCH v4.20.0 and above: **
+**The following options require EPOCH v4.20.0 and above:**
 
  -   `use_radiative_recombination` - Logical flag controlling the use of
       radiative recombination. Default value is "F".

content/documentation/input_deck/Input_deck_qed.md

@@ -67,9 +67,9 @@ then the force is not calculated. This should nearly always be enabled
 when using the QED model. It is only provided for testing purposes. The
 default value is "T".
 
-** The following options require EPOCH v4.20.0 and above: **
+**The following options require EPOCH v4.20.0 and above:**
 
--  `Linear_breit_wheeler` - Logical flag to control the use of the
+-  `linear_breit_wheeler` - Logical flag to control the use of the
 linear Breit Wheeler effect. Default value is "F".
 
 - `LBW_differential_cross` - Logical flag to control use of the

content/documentation/input_deck/Input_deck_species.md

@@ -144,7 +144,7 @@ particle-like specifications will be ignored. Background species are currently
 only used by the bremsstrahlung radiation model. 
 See [here][Input_deck_bremsstrahlung]
 for details. Default value is "F". "background" is accepted as an alias.
-- `recombine` - ** The following option requires EPOCH v4.20.0 and above: **:
+- `recombine` - **The following option requires EPOCH v4.20.0 and above:**:
 Control if species should be allowed to recombine. Different recombination
 models can be enabled in the [*control*][Input_deck_control] block. The
 default value is "F".